Mercurial > hg > nginx-vendor-current
annotate src/os/unix/ngx_aio_read_chain.c @ 22:8b6db3bda591 NGINX_0_1_11
nginx 0.1.11
*) Feature: the worker_priority directive.
*) Change: both tcp_nopush and tcp_nodelay directives affect the
transferred response.
*) Bugfix: nginx did not call initgroups().
Thanks to Andrew Sitnikov and Andrei Nigmatulin.
*) Change: now the ngx_http_autoindex_module shows the file size in the
bytes.
*) Bugfix: the ngx_http_autoindex_module returned the 500 error if the
broken symlink was in a directory.
*) Bugfix: the files bigger than 4G could not be transferred using
sendfile.
*) Bugfix: if the backend was resolved to several backends and there
was an error while the response waiting then process may got caught
in an endless loop.
*) Bugfix: the worker process may exit with the "unknown cycle" message
when the /dev/poll method was used.
*) Bugfix: "close() channel failed" errors.
*) Bugfix: the autodetection of the "nobody" and "nogroup" groups.
*) Bugfix: the send_lowat directive did not work on Linux.
*) Bugfix: the segmentation fault occurred if there was no events
section in configuration.
*) Bugfix: nginx could not be built on OpenBSD.
*) Bugfix: the double slashes in "://" in the URI were converted to
":/".
| author | Igor Sysoev <http://sysoev.ru> |
|---|---|
| date | Thu, 02 Dec 2004 00:00:00 +0300 |
| parents | f0b350454894 |
| children | 72eb30262aac |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 #include <ngx_config.h> | |
| 8 #include <ngx_core.h> | |
| 9 #include <ngx_event.h> | |
| 10 #include <ngx_aio.h> | |
| 11 | |
| 12 | |
| 13 ssize_t ngx_aio_read_chain(ngx_connection_t *c, ngx_chain_t *cl) | |
| 14 { | |
| 15 int n; | |
| 16 u_char *buf, *prev; | |
| 17 size_t size; | |
| 18 ssize_t total; | |
| 19 ngx_err_t err; | |
| 20 | |
| 21 if (c->read->pending_eof) { | |
| 22 c->read->ready = 0; | |
| 23 return 0; | |
| 24 } | |
| 25 | |
| 26 total = 0; | |
| 27 | |
| 28 while (cl) { | |
| 29 | |
| 30 /* we can post the single aio operation only */ | |
| 31 | |
| 32 if (!c->read->ready) { | |
| 33 return total ? total : NGX_AGAIN; | |
| 34 } | |
| 35 | |
| 36 buf = cl->buf->last; | |
| 37 prev = cl->buf->last; | |
| 38 size = 0; | |
| 39 | |
| 40 /* coalesce the neighbouring bufs */ | |
| 41 | |
| 42 while (cl && prev == cl->buf->last) { | |
| 43 size += cl->buf->end - cl->buf->last; | |
| 44 prev = cl->buf->end; | |
| 45 cl = cl->next; | |
| 46 } | |
| 47 | |
| 48 n = ngx_aio_read(c, buf, size); | |
| 49 | |
| 50 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_read: %d", n); | |
| 51 | |
| 52 if (n == NGX_AGAIN) { | |
| 53 return total ? total : NGX_AGAIN; | |
| 54 } | |
| 55 | |
| 56 if (n == NGX_ERROR) { | |
| 57 return NGX_ERROR; | |
| 58 } | |
| 59 | |
| 60 if (n == 0) { | |
| 61 c->read->pending_eof = 1; | |
| 62 if (total) { | |
| 63 c->read->eof = 0; | |
| 64 c->read->ready = 1; | |
| 65 } | |
| 66 return total; | |
| 67 } | |
| 68 | |
| 69 if (n > 0) { | |
| 70 total += n; | |
| 71 } | |
| 72 | |
| 73 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
| 74 "aio_read total: %d", total); | |
| 75 } | |
| 76 | |
| 77 return total ? total : NGX_AGAIN; | |
| 78 } |